Neodymium(III) oxalate explained

Neodymium(III) oxalate is the oxalate salt of neodymium, with the chemical formula of Nd₂(C₂O₄)₃ in the anhydrous or hydrate form. Its decahydrate decomposes to the anhydrous form when heated, and when heated further, decomposes to Nd₂O₂C₂O₄,^[1] finally obtaining neodymium(III) oxide.^[2] It dissolves in hydrochloric acid to form Nd(C₂O₄)Cl·3H₂O.^[3]

Notes and References

1. Gunther, Paul L.; Rehaag, Hildegard. The thermal decomposition of oxalates. I. The formation of peroxides by the thermal decomposition of oxalates in a vacuum. Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen. 1938. 71B: 1771-1777. ISSN: 0365-9488.
2. Wendlandt. W. W.. Thermal Decomposition of Rare Earth Metal Oxalates. Analytical Chemistry. 31. 3. 1959. 408–410. 0003-2700. 10.1021/ac60147a024.
3. Moebius, R.; Matthes, F. The exchange of oxalate ions for chloride ions of the oxalate hydrates of the rare earths and yttrium. Zeitschrift für Chemie, 1964. 4 (6): 234-235. ISSN: 0044-2402.